Learning R

Basic:

help.start()
?solve
a = 1
b = 2
c = a+b


CSV:

<variable_name> = read.csv("<file_name.csv>")
data1 = read.csv("sample.csv")

XLSX

install.packages("xlsx") --> choose mirror location --> ok
library(xlsx)

<variable_name> = read.xlsx("<file_name.xlsx>",<Sheet_Index>)
data2 = read.xlsx("sample1.xlsx",1)

<variable_name> <- read.xlsx("<file_name.xlsx>", sheetName = "<Sheet_Name>")
mydata <- read.xlsx("c:/myexcel.xlsx", sheetName = "mysheet")